A novel 9,10-dihydrophenanthrene2,7-dicarboxylic acid diester represented by the general formula (I):
and a novel 7-bromo-9,10-dihydrophenanthrene-2-carboxylic acid monoester represented by the general formula (II):
wherein each R represents a hydrocarbon group containing from 1 to 20 carbon atoms. A process for selectively synthesizing the compound of the general formula (I) and the compound of the general formula (II) comprising reacting 2,7-dibromo-9,10-dihydrophenanthrene with carbon monoxide and an alcohol of the general formula (III) R-OH in the presence of a base and a palladium-phosphine catalyst. Such novel compounds of the general formula (I) and (II) can be produced in a high yield and selectivity from inexpensive raw materials by simple reaction steps.
一种新的
9,10-二氢菲烯2,7-二
羧酸二酯,其通式表示为(I):和一种新的7-
溴-
9,10-二氢菲烯-2-
羧酸单酯,其通式表示为(II):其中每个R表示含有1至20个碳原子的烃基。一种选择性合成通式(I)化合物和通式(II)化合物的方法,包括在碱和
钯-膦催化剂的存在下,将
2,7-二溴-9,10-二氢菲烯与通式(III) R-OH的醇和
一氧化碳反应。这些新的通式(I)和(II)化合物可以通过简单的反应步骤从廉价原材料中高产率和选择性地制备。